<template>
  <div class="login-container">
    <!-- 导航栏 -->
    <van-nav-bar
    class="page-nav-bar"
    title="登录" >
    <van-icon
    slot="left"
    name="cross"
    @click="$router.back()"/>
    </van-nav-bar>
    <!-- /导航栏 -->
    <!-- 登录表单 -->
    <van-form @submit="onSubmit" ref="loginForm">
      <van-field
        v-model="user.mobile"
        required
        clearable
        name="mobile"
        label="用户名"
        placeholder="请输入手机号"
        :rules="userFormRules.mobile"
        type="number"
        maxlength='11'
      >
        <i slot="left-icon" class="toutiao toutiao-shouji"></i> <!-- 通过插槽处理自定义图标 -->
      </van-field>
      <van-field
        v-model="user.code"
        name="code"
        type="number"
        label="验证码"
        placeholder="请输入验证码"
        :rules="userFormRules.code"
        maxlength='6'
        required
      >
        <i slot="left-icon" class="toutiao toutiao-yanzhengma"></i><!-- 通过插槽处理自定义图标 -->
        <template #button><!-- 新版本插槽的写法 -->
          <van-count-down :time="6000 * 10"
          format="ss s"
          v-if="isCountDownShow"
          @finish="isCountDownShow = false"/>
          <!-- :time="time"中得time是自定义的时间 -->
          <van-button
          v-else
          class="send-sms-btn"
          round
          size="large"
          type="default"
          native-type="button"
          @click="onSendSms"
          >发送验证码</van-button>
        </template>
      </van-field>
      <div class="login-btn-wrap">
        <van-button class="login-btn" block type="info" native-type="submit">
          登录
        </van-button>
      </div>
    </van-form>
    <!-- /登录表单 -->
  </div>
</template>

<script>
import { login, sendSms } from '@/api/user'
export default {
  name: 'LoginIndex',
  components: {},
  props: {},
  data () {
    return {
      user: {
        mobile: '',
        code: ''
      },
      userFormRules: {
        mobile: [{
          required: true,
          message: '手机号不能为空'
        }, {
          pattern: /^1[3|5|7|8]\d{9}$/,
          message: '手机号格式错误'
        }],
        code: [{
          required: true,
          message: '验证码不能为空'
        }, {
          pattern: /^\d{6}$/,
          message: '验证码格式错误'
        }]
      },
      isCountDownShow: false // 是否展示倒计时
    }
  },
  computed: {},
  watch: {},
  created () {},
  mounted () {},
  methods: {
    async onSubmit (values) {
      // console.log('submit', values)
      // 背景禁止点击
      const user = this.user
      this.$toast.loading({
        duration: 0,
        message: '登陆中',
        forbidClick: true
      })
      try {
        const { data } = await login(user)
        // console.log('登录成功', res)
        this.$store.commit('setUser', data.data)
        this.$toast.success('登录成功')
        this.$router.back()
      } catch (err) {
        if (err.response.status === 400) {
          console.log('手机号或验证码错误', err)
          this.$toast.fail('登录失败，手机号或者验证码错误')
        } else {
          console.log('登录失败，请稍候重试', err)
          this.$toast.fail('登录失败，请稍候重试')
        }
      }
    },
    async onSendSms () {
      // console.log('onSendSms')
      // 验证手机号
      try {
        await this.$refs.loginForm.validate('mobile')
        // console.log('验证成功')
      } catch (err) {
        return console.log('验证失败', err)
      }
      // 验证成功显示倒计时
      this.isCountDownShow = true

      try {
        await sendSms(this.user.mobile)
        console.log('发送成功')
      } catch (err) {
        // console.log('发送失败', err)
        this.isCountDownShow = false
        if (err.response.status === 429) {
          this.$toast('发送太频繁了，请稍后重试')
        } else {
          this.$toast('发送失败，请稍后重试')
        }
      }
    }
  }
}
</script>

<style scoped lang="less">
.login-container {
  .toutiao {
    font-size: 37px;
  }
  .send-sms-btn {
    width: 152px;
    height: 46px;
    line-height: 46px;
    background-color: #ededed;
    font-size: 22px;
    color: #666;
  }
  .login-btn-wrap {
    padding: 53px 33px;
    .login-btn {
      background-color: #6db4fb;
      border: none;
    }
  }
}
</style>
